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‎Toddler_Timer/code.py

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# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import time
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import board
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import displayio
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import neopixel
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import digitalio
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from adafruit_seesaw import seesaw, rotaryio, digitalio
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from adafruit_bitmap_font import bitmap_font
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from adafruit_display_text import label
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import adafruit_displayio_ssd1306
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import simpleio
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from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
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from rainbowio import colorwheel
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COLOR = (255, 150, 0) # yellow
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OFF = (0, 0, 0)
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PIXEL_PIN = board.A0
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NUM_PIXELS = 6
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timers = [6, 10, 15, 20, 25, 30] # minutes
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color_time = 20 # milliseconds
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# rotary encoder
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i2c = board.STEMMA_I2C()
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seesaw = seesaw.Seesaw(i2c, addr=0x36)
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encoder = rotaryio.IncrementalEncoder(seesaw)
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pos = -encoder.position
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last_pos = pos
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seesaw.pin_mode(24, seesaw.INPUT_PULLUP)
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button = digitalio.DigitalIO(seesaw, 24)
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button_state = False
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pixels = neopixel.NeoPixel(PIXEL_PIN, NUM_PIXELS, brightness=0.2, auto_write=False)
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pixels.fill(OFF)
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pixels.show()
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# display setup
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displayio.release_displays()
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# oled
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oled_reset = board.D9
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display_bus = displayio.I2CDisplay(i2c, device_address=0x3D, reset=oled_reset)
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WIDTH = 128
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HEIGHT = 64
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display = adafruit_displayio_ssd1306.SSD1306(display_bus, width=WIDTH, height=HEIGHT)
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font = bitmap_font.load_font("/Arial-14.bdf")
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main_area = label.Label(font, text="6 Minutes", color=0xFFFFFF)
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main_area.anchor_point = (0.5, 0.0)
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main_area.anchored_position = (display.width / 2, display.height / 2)
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splash = displayio.Group()
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splash.append(main_area)
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display.root_group = splash
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timer_index = 0
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timer = timers[timer_index]
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time_remaining = timer * 60000
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active_timer = False
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timer_clock = ticks_ms()
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color_clock = ticks_ms()
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color_value = 0
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last_map = 0
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mapped_time = 0
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while True:
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if not active_timer:
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pos = encoder.position
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if pos != last_pos:
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if pos > last_pos:
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timer_index = (timer_index + 1) % 6
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else:
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timer_index = (timer_index - 1) % 6
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print(timer_index)
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main_area.text = f"{timers[timer_index]} Minutes"
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last_pos = pos
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if not button.value and not button_state:
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main_area.text = "START!"
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timer = timers[timer_index]
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time_remaining = timer * 60000
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last_map = 0
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timer_clock = ticks_ms()
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color_clock = ticks_ms()
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active_timer = True
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button_state = True
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if button.value and button_state:
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button_state = False
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if active_timer:
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if ticks_diff(ticks_ms(), timer_clock) >= 1000:
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time_remaining -= 1000
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remaining = int(time_remaining / 1000)
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secs_remaining = remaining % 60
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remaining //= 60
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mins_remaining = remaining % 60
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if time_remaining > 0:
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mapped_time = simpleio.map_range(
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time_remaining, 0, (timer * 60000), 0, NUM_PIXELS + 1
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)
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if mapped_time < 1:
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mapped_time = 1
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if int(mapped_time) != last_map:
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pixels.fill(OFF)
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last_map = int(mapped_time)
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main_area.text = f"{mins_remaining}:{secs_remaining:02}"
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else:
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pixels.fill(COLOR)
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pixels.show()
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time.sleep(0.5)
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pixels.fill(OFF)
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pixels.show()
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main_area.text = "DONE!"
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print(time_remaining)
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timer_clock = ticks_add(timer_clock, 1000)
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if ticks_diff(ticks_ms(), color_clock) >= color_time:
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color_value = (color_value + 1) % 255
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for i in range(int(mapped_time)):
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pixels[i] = colorwheel(color_value)
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if time_remaining > 0:
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pixels.show()
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color_clock = ticks_add(color_clock, color_time)
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if not button.value and not button_state:
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timer = timers[timer_index]
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pixels.fill(OFF)
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pixels.show()
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main_area.text = "STOPPED"
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active_timer = False
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button_state = True
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if button.value and button_state:
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button_state = False
1+
# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
4+
5+
import time
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import board
7+
import displayio
8+
import neopixel
9+
import digitalio
10+
from adafruit_seesaw import seesaw, rotaryio, digitalio
11+
from adafruit_bitmap_font import bitmap_font
12+
from adafruit_display_text import label
13+
import adafruit_displayio_ssd1306
14+
import simpleio
15+
from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
16+
from rainbowio import colorwheel
17+
18+
COLOR = (255, 150, 0) # yellow
19+
OFF = (0, 0, 0)
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PIXEL_PIN = board.A0
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NUM_PIXELS = 6
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timers = [6, 10, 15, 20, 25, 30] # minutes
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color_time = 20 # milliseconds
24+
25+
# rotary encoder
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i2c = board.STEMMA_I2C()
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seesaw = seesaw.Seesaw(i2c, addr=0x36)
28+
encoder = rotaryio.IncrementalEncoder(seesaw)
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pos = -encoder.position
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last_pos = pos
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seesaw.pin_mode(24, seesaw.INPUT_PULLUP)
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button = digitalio.DigitalIO(seesaw, 24)
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button_state = False
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pixels = neopixel.NeoPixel(PIXEL_PIN, NUM_PIXELS, brightness=0.2, auto_write=False)
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pixels.fill(OFF)
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pixels.show()
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# display setup
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displayio.release_displays()
41+
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# oled
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oled_reset = board.D9
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display_bus = displayio.I2CDisplay(i2c, device_address=0x3D, reset=oled_reset)
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WIDTH = 128
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HEIGHT = 64
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display = adafruit_displayio_ssd1306.SSD1306(display_bus, width=WIDTH, height=HEIGHT)
48+
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font = bitmap_font.load_font("/Arial-14.bdf")
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main_area = label.Label(font, text="6 Minutes", color=0xFFFFFF)
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main_area.anchor_point = (0.5, 0.0)
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main_area.anchored_position = (display.width / 2, display.height / 2)
53+
splash = displayio.Group()
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splash.append(main_area)
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display.root_group = splash
56+
57+
timer_index = 0
58+
timer = timers[timer_index]
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time_remaining = timer * 60000
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active_timer = False
61+
timer_clock = ticks_ms()
62+
color_clock = ticks_ms()
63+
color_value = 0
64+
last_map = 0
65+
mapped_time = 0
66+
67+
while True:
68+
if not active_timer:
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pos = encoder.position
70+
if pos != last_pos:
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if pos > last_pos:
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timer_index = (timer_index + 1) % 6
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else:
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timer_index = (timer_index - 1) % 6
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print(timer_index)
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main_area.text = f"{timers[timer_index]} Minutes"
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last_pos = pos
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if not button.value and not button_state:
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main_area.text = "START!"
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timer = timers[timer_index]
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time_remaining = timer * 60000
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last_map = 0
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timer_clock = ticks_ms()
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color_clock = ticks_ms()
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active_timer = True
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button_state = True
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if button.value and button_state:
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button_state = False
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if active_timer:
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if ticks_diff(ticks_ms(), timer_clock) >= 1000:
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time_remaining -= 1000
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remaining = int(time_remaining / 1000)
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secs_remaining = remaining % 60
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remaining //= 60
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mins_remaining = remaining % 60
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if time_remaining > 0:
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mapped_time = simpleio.map_range(
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time_remaining, 0, (timer * 60000), 0, NUM_PIXELS + 1
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)
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mapped_time = max(mapped_time, 1)
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if int(mapped_time) != last_map:
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pixels.fill(OFF)
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last_map = int(mapped_time)
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main_area.text = f"{mins_remaining}:{secs_remaining:02}"
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else:
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pixels.fill(COLOR)
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pixels.show()
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time.sleep(0.5)
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pixels.fill(OFF)
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pixels.show()
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main_area.text = "DONE!"
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print(time_remaining)
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timer_clock = ticks_add(timer_clock, 1000)
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if ticks_diff(ticks_ms(), color_clock) >= color_time:
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color_value = (color_value + 1) % 255
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for i in range(int(mapped_time)):
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pixels[i] = colorwheel(color_value)
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if time_remaining > 0:
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pixels.show()
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color_clock = ticks_add(color_clock, color_time)
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if not button.value and not button_state:
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timer = timers[timer_index]
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pixels.fill(OFF)
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pixels.show()
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main_area.text = "STOPPED"
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active_timer = False
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button_state = True
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if button.value and button_state:
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button_state = False

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